Radio connection



July 14,1931. H. UNGAR RADIO CONNECTION Filed April 5, 1923 Patented July 14, 193i UNITED `nanny UNGAR, or sr, Louis,

nUBILIEn coNDEivsEn eonronarron;

MISSOURI,

Application mea apra a,

'lhis invention relates to radio connections whereby the antenna terminal of a radio set is inductively connected to an electric light socket, thereby utilizing the exterior Wires leading to such socket as an aerial and rendering unnecessary the erection oi? the conventional outside aerial; and has `for its object to provide such a device which shall be ecient in operation and simple and compact in construction.

ln the accompanying drawings forming part of this speciiication, in which like number of reference denote like parts Wherever they occur,

. igure 1 is a perspective view ont the device as it appears when disconnected; f

Figure 2 is a longitudinal central sectional view taken through the prongs or blades, showing the device connected to an electric socket plug; and t Figure 3 is a4 transverse sectional vievv taken on the line 3-3 of Figure 2.

Referring to the drawings, 1 designates acylindrical body molded ot insulating mate-l rial and having a concentric cylindrical recess 2, a Wall 3 surrounding said recess 2, and an annular concentric recess 4t, and outer vvall 5, and end Wall 6 at oneend thereot", and an opening 7 at its other end. limbedded in recess 4 is a metal tube 8, preferably copper,

' having its upper end terminating in a blade of closing the opening 9, While imbedded in end Wall 6 and diametrically opposed to blade 9 is a blade 19, vvhich is dead-ended at ll-in end vvall 6. The blades 9 and 10 extend through'the top 12 ot an end vvall 6 and have near their ends 13 apertures 14, the ends 13 being beveled at l5 to facilitate their insertion into the openings l@ in plug 17. A tube 18, preferably cop er, nts Within recess 2 against vvall.3, and as connected to its interlor, preferably by soldering, the metal strands 19 of an insulated flexible Wire or cord'20, which terminates at its other end in a metal tip 2l havin a reduced portion 22 for connection to te a tenna terminal of a radio set. Wire 2O passes through an opening 23 in a cap 24 molded ot insulating material and cemented to the ends 25 and 26 of the walls 3 and 5 for the purpose 7, the end 26 oit Wall reas. sensi nuA ,esa

'5 projecting slightly beyond the end 25 otl Wall 3 and theends of themetal tubes 8 andA 18- for co-operation With an annular depression 27 in cap 24e.

Plug 17 forms no part of this invention and may be of any of the usual types, consisting conventionally of an insulating body 28 having the metal prongs or blades 29 and -30 connected to the screw head 31 and screw cap 32 respectively, the prongs 29 and 30 having beads or bends 33 forlengagement With the apertures 1li of the blades 9 and 10 for the purpose ot insuring continued connection of the blades 9 and 10 with the plug 17 after the same has been established.

lin operation, the plug 17 is screwed into any electric light socket, after Which the blades 9 and 10 are connected with plug 17 and the tip 21 is-connected to the antenna terminal of the radio set, which is then tuned to the Wave length of the desired transmitting station, the set, ofcourse, having the 'usual ground connection. The radio iinpulses are collected by the outside Wires and pass through the plug 17 and the blade 9 to the tube 8, whence they are conveyed by electro-static induction across the Wall 3 to the tube i8 and thence by conduction through Wire .20 to `the antenna terminal of the radio set. llt is, of course, understood that no lighting current can tlovv through this radio connection, since the blade 10 is dead-ended at ll vin insulating vvall 6 and blade 9 and tube 8 are insulated from the tube 18 by the vvall 3.

Having thus described'this invention, il hereby reserve the benefit of all changes in form, arrangement, order, or use of parts, as it is evident that many minor changes may be made therein Without departing from the spirit of this invention or' the scope of the ollovving claims..

l claim:

. l, lin a radio connection, a member formed ot insulating material, a plug attached to said member and adapted for insertion in a lamp socket, said member having concentric recesses leading in from the free end thereor, atube positioned in the outer recess and having an extension for engaging one terininal of said plug, a second extension insulated from said tube and adapted for connection with the other of said plug terminals, a second tube positioned in the other recess and being insulated from the iirstmentioned tube and ineans for attaching said second tube to a radio set and subsequent inductive connection to said socket.

2. A connecting device for inductively coupling a high frequency receiving set to a low Jfrequency power line, comprising an enclosing body of insulating material9 an armature element in the 'form of a plate within the body having a portion extending to the outside of the body 'for engaging an outlet ot the power line, another plate or" opposite polarity within said body having conductiing means for connecting the same with the receiving seta said plate elements being separated and maintained in spaced relation by the insulating material of the body1 3. A connecting device for inductively coupling a high frequency receiving set to a low :frequency power line, comprising an enclosing body of insulating nnaterial7 an armature element in the torni of a plate within the body having a portion extending troni one end of the body tor 'engaging the outlet oi2 a power line, another lplate of opposite polarity within said body having conducting means extending from the opposite end ot the body for connecting the same with the receiving set, said plat/e elements being separated and maintained in spaced relation 1 by the insulating material oif the body.

' ln testimony whereof Tl hereunto aix my signature..

HARRY UN Lemans 

